MCQ in Philippine Electrical Code (PEC) Part 9 PDF

1 MCQ in Philippine Electrical Code (PEC) Part 9 | REE Board Exam | This is the Multiple Choice Questions Part 9 of the Series in Philippine Electrical Code (PEC) as one of the Electrical Engineering topic. In Preparation for the REE Board Exam make sure to expose yourself and familiarize in each...

1 MCQ in Philippine Electrical Code (PEC) Part 9 | REE Board Exam | This is the Multiple Choice Questions Part 9 of the Series in Philippine Electrical Code (PEC) as one of the Electrical Engineering topic. In Preparation for the REE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Exam Questions in Electrical Engineering field, Electrical Engineering Books, Journals and other Electrical Engineering References. Continue Practice Exam Test Questions Part 9 of the Series Choose the letter of the best answer in each questions. ⇐ MCQ in Philippine Electrical Code (PEC) Part 8 | REE Board Exam 401. An auxiliary conductor used in connection with remote measuring devices or for operating apparatus at a distant point. A. Tie wire B. Jumper wire C. Pilot wire D. Dummy wire View Answer: Answer: Option C Solution: 402. RME Board April 1994, RME Board October 1995 Service entrance conductors passing over roots shall have a clearance over the roof which they pass of A. 1000 mm B. 2000 mm C. 1500 mm D. 2500 mm View Answer: Answer: Option D Solution: 403. The conductors including splices and taps shall NOT fill the wireway to more than ____ percent of its area at that point. A. 65 B. 70 C. 75 D. 80 View Answer: Answer: Option C Solution: 404. Liquid-tight metal conduit smaller than ____ electrical trade size shall NOT be used. A. 20 mm B. 15 mm C. 12 mm D. none of these View Answer: Answer: Option B Solution: 405. Service drop conductors passing over residential property and driveways and those commercial areas not subject to truck traffic shall have a vertical clearance of ____. A. 4600 mm B. 5500 mm C. 3700 mm D. 4800 mm View Answer: Answer: Option A Solution: 406. The equipment bonding jumper shall be permitted to be installed inside or outside of a raceway or enclosures where installed on the outside, the length of the equipment bonding jumper shall NOT exceed ____. A. 2000 mm B. 1500 mm C. 1800 mm D. 1200 mm View Answer: Answer: Option C Solution: 407. An electrician should consider all electrical equipment live unless he definitely knows that they are not. The main reason of this practice is to avoid. A. personal injury B. energizing the wrong circuit C. de-energizing the wrong circuit D. unnecessary work View Answer: Answer: Option A Solution: 408. Electrical floor assemblies shall NOT be installed _____. A. where subject to corroded vapors B. outdoors C. in wet or damp locations D. all of these View Answer: Answer: Option D Solution: 409. In cases where there are energized parts normally exposed on the front of switchboards or motor control centers, the working space in front shall NOT be less than _____. A. 1000 mm B. 1500 mm C. 2000 mm D. 1800 mm View Answer: Answer: Option A Solution: 410. Cabinet and cutout boxes shall have an air space of at least ____ between the base of the device and the wall of any metal cabinet or cutout box in which the device is mounted. A. 1.5 mm B. 1.8 mm C. 2.0 mm D. 2.4 mm View Answer: Answer: Option C Solution: 411. Service conductors in cable shall NOT be smaller than ______. A. 5.5 mm2 C. 3.5 mm2 B. 8.0 mm2 D. 14.0 mm2 View Answer: Answer: Option A Solution: 412. For non-dwelling receptacles loads, the demand factor for the first 10 kVA or less shall be A. 60% B. 70% C. 80% D. 100% View Answer: Answer: Option D Solution: 413. In each conduit run entering an enclosure for switches, circuit breakers, relays and others that may produce high temperatures, seals on the conduit shall be installed within the certain length before entering the enclosure. What is this length? A. 900 mm B. 750 mm C. 250 mm D. 460 mm View Answer: Answer: Option D Solution: 414. The ampacity of the conductors can be derated at most, _____ times(s). A. two B. one C. three D. four View Answer: Answer: Option C Solution: 415. In the schedule of loads for lighting, which of the following contents is NOT necessary? A. Protective device rating B. Panel as numbered in the feeder diagram C. Number of lighting outlets per circuit D. Frequency rating View Answer: Answer: Option D Solution: 416. If potential exceeding _____ are employed, a permanent warning sign shall be displayed. A. 600 V B. 500 V C. 300 V D. 1,000 V View Answer: Answer: Option A Solution: 417. A load where maximum current is expected to continue for three hours or more. A. Continuous load B. Connected load C. Maximum load D. Average load View Answer: Answer: Option A Solution: 418. Communication conductors shall NOT be smaller than _____. A. 2.0 mm2 C. 3.5 mm2 B. 1.25 mm2 D. 5.5 mm2 View Answer: Answer: Option A Solution: 419. Receptacle and attachment plugs shall be permitted to be of lower ampere rating than the branch circuit but NOT less than ____ percent of the fixture full load current. A. 100 B. 125 C. 115 D. 130 View Answer: Answer: Option B Solution: 420. A wye-delta starter for a single voltage three phase squirrel cage induction motor would require the connection of a certain number of wires from the motor. How many wires would be needed? A. 3 wires B. 9 wires C. 6 wires D. 12 wires View Answer: Answer: Option C Solution: 421. At least how many receptacle outlet(s) shall be installed outdoors for a one family dwelling unit? A. One B. Two C. Three D. None of these View Answer: Answer: Option A Solution: 422. What is the maximum permitted load of a 15 A branch circuit? A. 10 A B. 15 A C. 12 A D. 8 A View Answer: Answer: Option C Solution: 423. Where a feeder supplies continuous load or any combination of continuous and noncontinuous load. The rating of the overcurrent device shall NOT be less than the non-continuous load plus _____ of the continuous load. A. 125% B. 110% C. 150% D. 175% View Answer: Answer: Option A Solution: 424. Faceplates of insulting material shall not be combustible and NOT less than _____ in thickness. A. 2.0 mm B. 2.3 mm C. 3.0 mm D. 2.5 mm View Answer: Answer: Option B Solution: 425. RME Board April 1994 For raceway 20 mm trade size or larger containing conductors 22 mm2 or larger, the minimum length of the box in straight pulls shall NOT be less than _____ times the trade diameter of the largest raceway. A. 8 B. 10 C. 6 D. 12 View Answer: Answer: Option A Solution: 426. Type MC cable shall NOT be used _____. A. where exposed to corrosive materials B. as direct burial to earth C. where exposed to cinder fills D. all of these View Answer: Answer: Option D Solution: 427. Using aluminum or copper clad aluminum conductors, the minimum size of service entrance conductors shall be _____. A. 8.0 mm2 B. 14.0 mm2 C. 5.5 mm2 D. 3.5 mm2 View Answer: Answer: Option B Solution: 428. Ground counterpoise conductor shall be soft copper wire NOT smaller than A. 5.5 mm2 C. 3.5 mm2 B. 2.0 mm2 D. 8.0 mm2 View Answer: Answer: Option D Solution: 429. The disconnecting means for motor circuits rated up to 600 volts, shall have an ampere rating of at least _____ percent of the full load current of the motor. A. 200 B. 115 C. 150 D. 125 View Answer: Answer: Option B Solution: 430. How many amperes will a 100 circuit breaker hold before tripping open the circuit? (Use rule of thumb). A. 200 A B. 500 A C. 400 A D. 300 A View Answer: Answer: Option D Solution: 431. A device for transferring one or more load conductor connections from one power source to another. A. Disconnecting switch B. Master switch C. Isolating switch D. Transfer switch View Answer: Answer: Option D Solution: 432. For an AC transformer and DC rectifier are welder having a time rating of one hour, the supply conductors shall NOT be less than _____ percent of its rated primary nameplate current. A. 90 B. 80 C. 75 D. 85 View Answer: Answer: Option C Solution: 433. Refers to the power plant mounted on wheels as used in the railroad transportation industry. A. Electric locomotive B. Electric train C. LRT D. None of these View Answer: Answer: Option A Solution: 434. If the terminal of the equipment grounding conductor is not visible, the conductor entrance hole shall be marked with the word _____. A. green B. white C. gray D. black View Answer: Answer: Option A Solution: 435. Type NMC (non-metallic sheathed cable) shall have an outer covering which have the following characteristics. Which one is NOT included? A. flame retardant B. moisture resistant C. corrosion resistant D. none of these View Answer: Answer: Option D Solution: 436. RME Board April 1996 Power and control tray cables (type TC) maybe used under one of the following conditions. Which one is this? A. Where exposed to physical damage B. Where installed as open cable on brackets C. Where installed in industrial establishment where a registered master electrician will service the installation D. Where direct buried underground View Answer: Answer: Option C Solution: 437. Where rear access is required to work on de-energized parts on the back of the enclosed equipment, a minimum working space of horizontally shall be provided. A. 1,000 mm B. 900 mm C. 800 mm D. 600 mm View Answer: Answer: Option C Solution: 438. A one family dwelling unit shall have a disconnecting means of at least _____ where the initial computed load is 10 kVA or more. A. 60 A B. 90 A C. 100 A D. 30 A View Answer: Answer: Option A Solution: 439. Large batteries are those connected to a charging device with an output of more than _____. A. 1.0 kW B. 1.5 kW C. 2.0 kW D. 2.5 kW View Answer: Answer: Option C Solution: 440. Which component of a DC motor is used to control the speed? A. Carbon brush assembly B. Armature winding C. Commutator D. Field winding View Answer: Answer: Option D Solution: 441. Switches used in watercrafts, shall be capable of breaking and making safely a load current equal to _____ of their rated current at the rated voltage. A. 100% B. 130% C. 125% D. 150% View Answer: Answer: Option D Solution: 442. A wiring method using knobs, tubes and flexible nonmetallic tubing for the protection and support and single insulated conductors concealed in hollow spaces of walls and ceilings of buildings. A. Open wiring on insulators B. Open wiring with knobs, tubes, etc. C. Concealed knob and tube wiring D. Knob and tube wiring View Answer: Answer: Option C Solution: 443. The ampacity of the branch circuit conductors and the rating or setting of over-current protective devices supplying fixed electric space heating equipment consisting of resistance elements with or without a motor shall NOT be less than _____ of the total load of the motors and the heaters. A. 125% B. 130% C. 115% D. None of these View Answer: Answer: Option A Solution: 444. A repulsion motor equipped with one of the following. Which one of this? A. A set of slip rings B. A commutator C. Both commutator and slip ring D. Neither a commutator nor a slip ring View Answer: Answer: Option C Solution: 445. Communication conductors shall have a vertical clearance of NOT less than _____ from all points of roofs above, which they pass. A. 2,500 mm B. 2,000 mm C. 2,400 mm D. 2,200 mm View Answer: Answer: Option C Solution: 446. A luminous discharge due to ionization of the air surrounding a conductor caused by a voltage gradient exceeding a certain critical value. A. Corona B. Skin effect C. Johnson’s effect D. Surge View Answer: Answer: Option A Solution: 447. Branch circuit that supplies a number of outlets for lighting and appliance. A. Multi-purpose branch circuit B. Special branch circuit C. Individual branch circuit D. General purpose branch circuit View Answer: Answer: Option D Solution: 448. The minimum number of branch circuits shall be determined from the _____. A. total computed load and the size of disconnected needed B. total computed load and the rating of the circuits used C. size or rating of the circuits by the PEC D. minimum number required by the PEC View Answer: Answer: Option B Solution: 449. The insulated conductor of type TC (cable tray) cable shall be in sizes _____ through _____ copper. A. 0.75 mm2, 500 mm2 B. 0.75 mm2, 300 mm2 C. 1.25 mm2 500 mm2 D. 1.25 mm2, 300 mm2 View Answer: Answer: Option A Solution: 450. A motor-generator arc welder has a 70 % duty cycle, the supply conductors shall NOT be less than _____ of its rated primary nameplate current. A. 86% B. 80% C. 84% D. 88% View Answer: Answer: Option A Solution: ⇒ MCQ in Philippine Electrical Code (PEC) Part 10 | REE Board Exam Questions and Answers in Philippine Electrical Code Following is the list of practice exam test questions in this brand new series: MCQ in Philippine Electrical Code PART 1: MCQ from Number 1 – 50 Answer key: included PART 2: MCQ from Number 51 – 100 Answer key: included PART 3: MCQ from Number 101 – 150 Answer key: included PART 4: MCQ from Number 151 – 200 Answer key: included PART 5: MCQ from Number 201 – 250 Answer key: included PART 6: MCQ from Number 251 – 300 Answer key: included PART 7: MCQ from Number 301 – 350 Answer key: included PART 8: MCQ from Number 351 – 400 Answer key: included PART 9: MCQ from Number 401 – 450 Answer key: included PART 10: MCQ from Number 451 – 500 Answer key: included MORE ON: MCQ in Philippine Electrical Code Series